Options

R Command

R Snippet

The code being executed in R. New input data is available as a data frame named knime.in,
while the desired model must be available as a variable in the workspace from a previously
executed R Learner node.

Flow Variable List

The list contains the flow variables that are currently available at
the node input. Double clicking any of the entries will insert the
variable at the current cursor position.

Column List

The list contains the column references that are currently available at
the node input. Double clicking any of the entries will insert the
respective identifier at the current cursor position.

Templates

Category

A template category defined by the author.

Title

Names of the available templates.

Description

A brief overview of the purpose of the template.

Preview

The code to be applied to your expression editor.

Advanced

NaNs

Convert NaN and +/-Infinity output to missing cells. Enable this for backwards compatibility with the behavior before
version 2.10.

Send Row Names to R

Whether to send the row names from KNIME to R. Disabling this can improve performance with very large tables.
Row names of knime.in will instead be default R row names: 1:n.

R type for knime.in

By default knime.in is data.frame. For large input tables, using data.table is likely more memory efficient
especially while sending the input data to R and may therefore be faster.
Please be aware that the support for data.table is experimental (!) and requires the "data.table" R package
to be installed. It may not work for some R scripts, may slightly change or even be removed entirely in a future version.

Send batch size

The input of the R node is sent in row batches (default, 10 000 rows at a time). This is the amount of rows KNIME will
retain in memory at any given time. For large tables, a higher batch size may be faster, but will require additional
memory.
Be aware, that R will likely keep all of the input table in memory and this only helps with memory during transmission
of data to R.

Input Ports

R Model Input

Data Input

Output Ports

Predicted data output

Views

R Std Output

The text sent to standard out during the execution of R executable
as well as the text of the .Rout file generated by R.

R Error Output

The text sent to standard error during the execution of R executable
as well as the text of the .Rout file generated by R.
(If it appears in gray, it's the output of a previously
failing run which is preserved for your trouble shooting.)

Installation

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NodePit for KNIME
extension for your KNIME Analytics Platform.

Developers

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Contact

Do you have feedback, questions, comments about NodePit, want to support this platform, or want your own nodes or workflows listed here as well?
Do you think, the search results could be improved or something is missing?
Then please get in touch! Alternatively, you can send us an email to mail@nodepit.com,
follow @NodePit on Twitter,
or chat on Gitter!

Please note that this is only about NodePit. We do not provide general support for KNIME — please use the KNIME forums instead.

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